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Integer转换成int的方法
Integer i = new Integer(10);
int k = i.intValue();
即Integer.intValue(); -
int转换成Integer
int i = 10;
Integer it = new Integer(i);
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String转换成int的方法
String str = “10”;
Integer it = new Interger(str);int i = it.intValue();
即:int i = Integer.intValue(string);
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int转换成String
int i = 10;
- String s = String.valueOf(i);
- String s = Ingeger.toString(i);
- String s = “” + i;
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String转换成Integer
String str = “10”;
Integer it = Integer.valueOf(str);
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Integer转换成String
Integer it = new Integer(10);
String str = it.toString();
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String转换成BigDecimal
BigDecimal bd = new BigDecimal(str);
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日期
Calendar calendar = Calendar.getInstance();
int year = calendar.get(Calendar.YEAR);
int month = calendar.get(Calendar.MONTH)+1;
int day = calendar.get(Calendar.DATE);//获取今天的日期字符串
String today = java.text.DateFormat.getDateInstance().format(new java.util.Date());
//获取今天的日期
new java.sql.Date(System.currentTimeMillis());
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